Here is the code. Just replace the code in normal.c in the firmware/src/watch/watchface folder. Then "make all" with my makefile in the src/watch folder and then "make program" to load in your watch.
The code is hacked together from my limited understanding of bitmaps and I've changed the direction of the game without changing the variable names. But it seems to work. If someone wants to add the dashed center line, I would really appreciate it.